2x-4y=8 --> (4y=-2x+8)/2 ---> (2y=-x+4)/2 --> y=-1/2+2
slope is -1/2 domain is (2, 0)
Notice that half of the coefficient of x is (1/2)(-4), or -2.
Then x^2 - 4x becomes
x^2 - 4x + 4 - 4 = 0, or (x -2)^2 = 4. Then x = -2 plus or minus 2, and the two roots are 0 and -4.
Thus, add 4 to both sides to obtain x^2 - 4x + 4 = 4.
10 - 5 = 5
Hope this helped your husband.
Answer:
-10
Step-by-step explanation: